Masonry Magazine December 1987 Page. 25
Powder-Driven Pins
FIG. 10
The choice of a fastener as either a solid or hollow wall type fastener; the weight of the fixture will determine the size of the fastener required. The fastener selection chart shown in Table 1 can be used as a general guide in selecting a fastener type based on the brick type, installation location and fixture weight.
Environment
Environmental factors may have a definite impact on the long-term service life of fasteners and should be considered in their selection. Environmental factors do not, in general, influence the type of fastener selected, but should influence the choice of fastener based on the material from which the fastener is made. Corrosion is a major concern, especially when fasteners are exposed to the elements or when fasteners are used in areas where contact with corrosive agents is likely.
Steel fasteners used for applications under normal exposure conditions should be galvanized (zinc-coated) to resist corrosion. Lead, copper-coated or brass fasteners also provide adequate corrosion resistance for normal exposures. In applications where fasteners are subject to severe exposure conditions or exposed to chemicals, stainless steel fasteners should be used.
Aesthetics
In most applications, the fastener or fasteners installed will be hidden by the attachment (i.e., cabinets, baseboards, electrical boxes or furring), and the physical appearance of the fastener (usually the head of a screw or bolt) will not be of importance. However, when fasteners are used
TABLE 1
Fastener Selection Chart
| Fastener | Brick Type | Installation Location | Fixture Weight |
|---|---|---|---|
| | Solid Brick (Cored) | Solid Brick (Uncored) | Hollow Brick | Head Joint | Bed Joint | Unit Face | Light | Medium | Heavy |
| Wooden Blocks | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Metal Wall Plugs | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Screw Shields and Plugs | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Toggle Bolts | | | ✓ | | | | | | |
| Hollow Wall Screws | | | ✓ | | | | | | |
| Screws | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Sleeve Anchors | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Wedge Anchors | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Lag Shields | | | | | | | | | |
| Masonry Nails | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Powder-Driven Fasteners | ✓ | ✓ | ✓ | ✓ | ✓ | | ✓ | | |
| Adhesives | ✓ | ✓ | | Surface Applied | | | | | |